Re-pressing disk sound-records.



T. H. MACDONALD.

RE-PRESSING DISK SOUND RECORDS.

APPLICATION FILED SEPT. a, 1906.

1,022,100. Patented Apr. 2, 1912.

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anomtoz UNITED STATES PATENT OFFICE.

THOMAS H. MACDONALD, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR T0 AMERICAN GRAIHOPHONE COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF WEST VIRGINIA.

Specification of Letters Patent.

Application filed September a, 1906. Serial No. 333,813.

To all whom it may concern:

Be it known that I, THouAs H. MAonoX- ALD, a citizen of the United States, and a resident of Bridgeport, Connecticut, have invented a new and useful Improvement in Re-Pressing Disk Sound-Records, which improvement is fully set forth in the following specification.

This invention relates to disk sound-records and has for its object to utilize old disk records. I

In the manufacture of disk records by the American Graphophone Company, wlth whom I am now operating, two materialsare employed known respectively as ingredient X0. 1 and ingredient X0. 2. These ingredients consist of the ordinary material or stock employed in making such articles, namely, earthy matterand a binder consisting of a gum or gums. What we call ingredient No. 1 contains a considerable amount of shellac, which is desirable for giving the proper surface to the sound-record; whereas ingredient- Xo. 2 contains little or no shellac, but has the equivalent therefor in the'form of a cheaper gum or gums as the binder. Ingredient X0. 2 is employed for the main body of'the disk, and ingredient No. 1 constitutes the surface? I In carrying out myim ention, I proceed as follows: The old record disk is placed with the record-surface, which usually contains a printed label, uppermost, and is covered 'with finely powdered ingredient No. In practice, t ounce or g of an ounce is sufficient to coat a ten inch record. The coated record is then subjectedto heat until it has become pliable, when it is subjected to compression against the desired record-matrix. In practice, I have found it desirable in heating the dusted record, to place it upon a piece of muslin or canvas about twelve inches square for a ten inch record, and lay on a steam table. A cover may be used for the record, if necessary, to confine the heat so as to expedite the process. When the old record has becomepliable, the powder ingredient X0. 1) will have become adhesive, andthe whole is then lifted by the muslin or canvas and placed face downward upon the matrix. The cloth is then removed by peeling it from the softened disk, and a small quantity of ingredient No. 2 (about one-fourth of the amount used in making a complete record-(1e moo, or say about 1% ounces for a ten inch record) is placed upon top of the old'material, and the back of the die (preferably a little hotter than usual) is put in place and then pressure applied in the usual manner. The excess of stock will be squeezed out leaving the finished article of the usual dimensions. There is no flowing of the material over the face of the matrix, consequently the matrix-surface will not be injured. 4

The diagrammatic drawing annexed hereto for convenient reference indicates the successive steps in my process, as-practiced. I have set forth these steps with some particularity, but the invention is not limited to the precise forms and details disclosed: nor is this drawing to be understood as indicating the scope of the invention, reference be ing had to the appended claims for this purpose.

The article just prepared is, so far as PatentedApr.2,19 12. I

Having thus described my invention, I

claim:

1. The process of utilizing or repressing old disk records, which consists of covering the surface thereof with suitable material in powdered form, applying heat, placing additional material at the back, and compressing the same against a record-matrix. 2. The process of utilizin or repressing old disk records, which consists of applyin suitable materials at the front and bac thereof respectively, and subjecting the same to heat .and pressure against a recordmatrix.

3. The process of ressing a sound-record,

which consists in ta ing a tablet composed of inferior material capable of being rendered plastic by heat, and having one surface or side composed of superior shellac-containing material, applying to said shellac-containing surface a layer of powdered shellaccontaining record material, heating the said become plastic, applylng a sound-record tablet and said powdered layer until theymatrix to said heated powdered layer, and

subjecting the whole to pressure.

4:. The process of ressing a sound-record, which consists in ta ing a tablet composed in part of an inferior material capable of being rendered plastic by heat, and having a superior record surfacecontaining shellac, applying to said superiorrecord surface a layer of superior shellac-containing record material also capable of being rendered plastic by heat, subjecting the whole to heat, applying a sound-record matrix against said last-named layer, and subjecting the Whole to pressure. J

5. The process of pressing a sound-record, which consists in taking a tablet composed in part of an inferior material capable of being rendered plastic byheat and having a shellac-containing surface of superior material, applying in powdered form a shellaccontaining material to said superior surface, subjecting the Whole to heat until the said layers become united and plastic, placing a body rendered plastic by heat to the back of said inferior layer, applying a sound-record matrix to said powdered shellac-containing surface, and subjecting the whole topressure.

6. The process of pressing a sound-record, which consists in taking a tablet composed in part of an inferior material capable of being rendered plastic by heat and having a shellac-containing surface of superior material, applying a shellac-containing material to said superior surface, subjecting the whole to heat until the said layers become united and plastic, placing a body rendered plastic by heat to the back of said inferior layer, applying a sound-record matrix to said shellac-containing surface,and subject. ing the whole to pressure.

7. The process of pressing a sound-record, which consists in taking a tablet composed in part of inferior material capable of being rendered plastic by heat and having a superior shellac-containing surface, applying to said shellac-containing surface a layer of shellac-containing material capable of being rendered plastic by heat, subjecting the whole to heat, applying a sound record matrix to said shellac-containing surface and also applying to the back of said firstnamed inferior layer a second layer of inferior material rendered plastic by'heat, and subjecting the whole to pressure.

8. .Theprocess of pressing a sound-record, which consists in taking a tablet composed in part of inferior material capable of being rendered plastic by heat and having a surface of superior. shellac-containing material also capable of being rendered plastic by heat, applying ashellac-containing body of plastic material to the face of said superior shellac containing layer, subjecting the whole to heat, applying to the back of said inferior layer a body of inferior material rendered plastic by heat, placing saidshellac-containing body in contact with a soundrecord matrix, and subjecting the whole to pressure. 9. The herein described method of making molded articles, which consists in applying to the upper surface of a foundation which becomes plastic under the influence of heat,

a layer of powdered material having like properties, exposing both the foundation and the applied powdered layer to heat to cause them to unite, and thereupon transferring the entire article to a mold and subjectingit to pressure therein while hot.

10. The herein described method of molding sound-records, which consists in applying to the upper surface of a foundation which becomes plastic under the influence of heat, a layer of powdered shellac-containing materialwhich also becomes plastic under the influence of heat, exposing both the foundation and the applied powdered layer to heat,'and then subjecting the whole to pressure while hot and with said powdered layer in contact with a sound-record matrix. In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

I THOMAS H. MACDONALD.

Witnesses:

\ A. B. KEOUGH,

R. T. Prr'r. 

